unisonic technologies co., ltd lr6xxyy preliminary cmos ic www.unisonic.com.tw 1 of 4 copyright ? 2011 unisonic technologies co., ltd qw-r502-718.a dual output low esr cap. low-dropout 600ma linear regulator ? description the utc lr6xxyy is a low noise and high accuracy ldo voltage regulator which has the so ft start function. designers can reduce power consumption more easily by applying en function that can turn off the output of eac h device and control the in rush current through the soft start function. the utc lr6xxyy comes with low design cost and outstanding output stability and its compatibi lity of working with low esr ceramic capacitors is undoubted. be sides, the level of stability is ensured by the perfect transient response and psrr derived from a large frequency range. ? features * v d =470mv @ 600ma (typ.), v out 3.3v * range of output current:600ma / channel * low power consumption:50 a (v out1 and v out2 enable mode). * standby current:0.1 a (typ.) * accurate 2 % * high psrr: 65 db at 1khz. * each channel output current limit protection:950ma * with short circuit protection * output on/off control function hsop-8 ? ordering information ordering number package packing lead free halogen free lr6xxyyl-sh2-r LR6XXYYG-SH2-R hsop-8 tape reel lr6xxyyl-sh2-t lr6xxyyg-sh2-t hsop-8 tube note: xx: output voltage, refer to marki ng information.
lr6xxyy preliminary cmos ic unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r502-718.a ? pin configuration ? pin description pin no. pin name description 1 v out1 output 1. 2, 3 v in power input. 4 v out2 output 2. 5, 6, 8 nc no connection. 7 gnd (tab) ground. ? block diagram on/off control voltage reference thermal shutdown on/off control voltage reference thermal shutdown current limit current limit er er + - + - v out2 v out1 en2 gnd v in en1 r11 r12 r22 r21 channel 1 channel 2
lr6xxyy preliminary cmos ic unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r502-718.a ? absolute maximum rating parameter symbol ratings unit input voltage v in 7 v en pin voltage v en 7 v ambient temperature t a -40 ~ 85 c junction temperature t j 150 c storage temperature t stg -65 ~ 150 c notes: absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? thermal data parameter symbol rating unit junction to ambient ja 60 c/w junction to case jc 15 c/w ? electrical characteristics (v in =v out +1v, v en1 =v en2 =v in , t j =25c, unless otherwise specified) (note 1) parameter symbol test conditions min typ max unit input voltage (note 2) v in 1.6 6.0 v output voltage tolerance v out v in =6.0v, i out =1ma -2 2 % continuous output current i out 600 ma quiescent current i q v en2 =v en1 =v in 50 80 a gnd pin current i gnd i out1 =600ma, i out2 =600ma, v en2 =v en1 =v in 55 80 a standby current i stby v en1 =v en2 =0 0.1 a output current limit i il v out =gnd 650 950 ma dropout voltage v drop i out =600ma v out =1.8v 710 850 mv v out =2.5v 580 700 mv v out =3.3v 470 560 mv line regulation v lir v in =v out + 1v~6v 3 16 mv load regulation v lor i out =1ma~600ma 2 10 mv ripple rejection psrr f=1khz, ripple=0.5v p-p , 65 db output noise voltage f= 10~100khz 24 vrms temperature coefficient tc 50 ppm/c thermal shutdown temperature v in =v out +1v 150 c thermal shutdown hysteresis 35 c en pin specifications en pin current i en v en1 =v en2 = v in 0.1 a shutdown exit delay time t 100 s max output discharge resistance to gnd during shutdown rdson_ clmp 20 ? en input threshold v enh output on 1.6 v v enl output off 0.25 v notes: 1. specifications are production tested at t a =25c. specifications over the -40c~85c operating temperature range are assured by design, characterization and corr elation with statistical quality controls (sqc). 2. v in (min) is the higher value of v out + dropout voltage or 1.6v.
lr6xxyy preliminary cmos ic unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r502-718.a ? typical application circuit utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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